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Hmmm ... a rousse ... all I'm getting is, "A city of northeast Bulgaria on the Danube River south of Bucharest, Romania."
lots of electrical/electronic parts are measured in dc resistance. audio amplifires produce AC current. if an amp malfunctions and produces DC current you will end up with a blown speaker. Crown DC 150/300 amps are bad about going into DC current mode and blowing speakers. i'm trying to keep things simple here so people can get a basic understanding. if you go back and re-read my post above you will see that i said volts is current(pressure) , amps is current flow and watts is power used. i never said an amp does not produce power i said an amp does not put out or produce watts because watts is the measurement of power used(dissapated). if you look at the specs of a bare loudspeaker the impedance is listed as OHMS. that is not the same measurement as the DC resistance of the voice coil that can be measured with an VOM meter. impedance is measured using a scope or other equipment with an AC signal applied. OHMS are used as the term for speaker impedance and impedance is the word used for the guitar, mic, phono cartridge, etc for the input resistance. you cannot measure the ohms of a speaker with an ohm meter, you can only measure DC resistance of the voice coil and thats important when building passive crossovers that go between the speaker terminals of the amp and the speaker. i msuggest taking a basic electrical/electronic course to learn ohms law for a better understanding.
i was trying to keep the explanation simple. another way of saying it is > an amp that is rated at 100 watts at 8 ohms can supply 100% percent of the power needed for an 8 ohm speaker thats rated at 100 watts maxium power to operate at its maxium power rating. an amp thats rated at 50 watts at 8 ohms can only supply enough power for an 8 ohm speaker thats rated at 100 watts maxium power to operate at 50% of it maxium power rating. an amp thats rated at 200 watts at 8 ohms can supply double the power to operate an 8 ohm speaker thats rated at 100 watts maxium power and has the "potential" to destroy the speaker if more power than 100 watts is applied. with a tube amp you get the same power output no matter what the speaker ohm load is. with a transistor amp you get more power from the amp as the the speaker ohms goes down. the transistor amp will produce more power with a 2 ohm load then it will with a 16 ohm load due to the impedance(resistance). from what i learned long ago watts were use instead of voltage to describe an amps power rating due to how tube and transistor amps produce power vs speaker impedance. watts is also a larger number than volts and looks more impressive.
Back to school for you. Volts is not current, it's the electromotive force or difference in potential. So an amp produces power but it does not produce watts? Are you not aware that watts = power? As far as me taking a basic electronics course, it might interest you to know that I taught electronics in the Marines - radio repair generally and radio direction finders specifically, with RF, IF, audio and video circuits. So trust me, I know the difference between impedance and resistance. I also know that voltage is not current and current is not pressure. Seriously, you're in over your head. I mean that in the most loving way possible.
Dunno, but some PA amps are rated by voltage, e.g. 70 volts or 100 volts (output voltage, not supply voltage).
